該MAX15058高效率，電流模式，同步降壓型開關穩(wěn)壓器，集成電源開關的輸出提供高達3A的電流。該器件工作在2.7V至5.5V，并提供從0.6V輸出電壓高達94%的輸入電壓，使得對于分布式電源系統(tǒng)，便攜式設備和預穩(wěn)壓應用的理想選擇。

　　該MAX15058采用了具有高增益跨導誤差放大器電流模式控制架構。電流模式控制架構，方便易于補償設計，并確?？焖夙憫碾妷汉拓撦d瞬態(tài)逐周期電流限制。

　　MAX15058提供可選擇的跳過模式功能，以減少電流消耗，實現在輕輸出負載更高的效率。低的RDS(ON)的集成開關在重負載確保高效率，同時限度地減少關鍵的電感，使布局設計方面的分立解決方案更簡單的任務。利用一個簡單的布局和占位面積，保證通過在新設計的成功。

　　該MAX15058具有1MHz的，工廠修剪，固定頻率PWM模式操作。高開關頻率，隨著PWM電流模式架構，允許一個緊湊，全陶瓷電容設計。

　　MAX15058提供的電容可編程軟啟動降低浪涌電流，啟動到預偏置操作，以及的PGOOD開漏輸出，可作為電力中斷和排序的。

　　該MAX15058可在9焊球(3 × 3陣列)，1.65毫米×一點六五毫米WLP封裝，規(guī)定工作在-40 ° C至+85 ° C溫度范圍。

　　關鍵特性

　　●內部30mΩ(典型值)的RDS(ON)的高側和5V時18mΩ(典型值)低邊MOSFET

　　●連續(xù)3A輸出電流在整個溫度范圍

　　●95%的效率與3.3V輸出在3A

　　●1%輸出負載，線路和溫度電壓

　　●工作于2.7V至5.5V電源

　　●逐周期過流保護

　　●可調輸出0.6V至VIN的高達0.94 x

　　●可編程軟啟動

　　●工廠校準，1MHz的開關頻率

　　●穩(wěn)定低ESR的陶瓷輸出電容器

　　●安全，啟動進入預偏置輸出

　　●外部參考輸入

　　●跳過模式功能

　　●使能輸入/電源就緒輸出

　　●充分保護，以防止過流和過熱

　　●輸入欠壓鎖定

　　英文資料

　　The MAX15058 high-efficiency, current-mode, synchronous step-down switching regulator with integrated power switches delivers up to 3A of output current. The device operates from 2.7V to 5.5V and provides an output voltage from 0.6V up to 94% of the input voltage, making the device ideal for distributed power systems, portable devices, and preregulation applications.

　　The MAX15058 utilizes a current-mode control architecture with a high-gain transconductance error amplifier. The current-mode control architecture facilitates easy compensation design and ensures cycle-by-cycle current limit with fast response to line and load transients.

　　The MAX15058 offers selectable skip-mode functionality to reduce current consumption and achieve a higher efficiency at light output load. The low RDS(ON) integrated switches ensure high efficiency at heavy loads while minimizing critical inductances, making the layout design a much simpler task with respect to discrete solutions. Utilizing a simple layout and footprint assures first-pass success in new designs.

　　The MAX15058 features a 1MHz, factory-trimmed, fixed-frequency PWM mode operation. The high switching frequency, along with the PWM current-mode architecture, allows for a compact, all-ceramic capacitor design.

　　The MAX15058 offers a capacitor-programmable soft-start reducing inrush current, startup into PREBIAS operations, and a PGOOD open-drain output that can be used as an interrupt and for power sequencing.

　　The MAX15058 is available in a 9-bump (3 x 3 array), 1.65mm x 1.65mm WLP package and is specified over the -40°C to +85°C temperature range.   

　　關鍵特性

　　●Internal 30mΩ (typ) RDS(ON) High-Side and 18mΩ (typ) Low-Side MOSFETs at 5V

　　●Continuous 3A Output Current Over Temperature

　　●95% Efficiency with 3.3V Output at 3A

　　●1% Output Voltage Accuracy Over Load, Line, and Temperature

　　●Operates from 2.7V to 5.5V Supply

　　●Cycle-by-Cycle Overcurrent Protection

　　●Adjustable Output from 0.6V to Up to 0.94 x VIN

　　●Programmable Soft-Start

　　●Factory-Trimmed, 1MHz Switching Frequency

　　●Stable with Low-ESR Ceramic Output Capacitors

　　●Safe-Startup Into Prebiased Output

　　●External Reference Input

　　●Skip-Mode Functionality

　　●Enable Input/Power-Good Output

　　●Fully Protected Against Overcurrent and Overtemperature

　　●Input Undervoltage Lockout

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